Author alecsandru.patrascu
Recipients alecsandru.patrascu, brett.cannon, gregory.p.smith, pitrou, scoder, skip.montanaro, skrah
Date 2015-08-27.20:00:06
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Message-id <1440705606.28.0.401515800114.issue24915@psf.upfronthosting.co.za>
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The profile merging is necessary in case you want to use a pure clang compiler or you use GCC in OSX. For example, a general profiling action using clang will result in at least one binary profile. For our case, when using regrtest, we will have multiple profiles as the test is a multi-process one. The application llvm-profdata has the ability to merge the information collected from multiple processes, thus having a more precise map of what is executed from the profiled application. 

This step is mandatory even if we train on a single threaded or single process workload and have just one profile. More information about the entire process can be found here: http://clang.llvm.org/docs/UsersManual.html#profiling-with-instrumentation
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Date User Action Args
2015-08-27 20:00:06alecsandru.patrascusetrecipients: + alecsandru.patrascu, skip.montanaro, brett.cannon, gregory.p.smith, pitrou, scoder, skrah
2015-08-27 20:00:06alecsandru.patrascusetmessageid: <1440705606.28.0.401515800114.issue24915@psf.upfronthosting.co.za>
2015-08-27 20:00:06alecsandru.patrasculinkissue24915 messages
2015-08-27 20:00:06alecsandru.patrascucreate